NOTES: 2002
Commodity Flow Survey and supplemental data are preliminary. Multimodal includes the traditional
intermodal combination of truck and rail plus truck and water; rail and
water; parcel, postal, and courier service; and other multiple modes for the
same shipment. Supplemental estimates
cover logging, farm-based truck shipments, truck imports from Canada and
Mexico, rail imports from Canada and Mexico, air cargo imports and exports,
water imports and exports, and pipeline crude and petroleum products
shipments. These estimates exclude
other supplemental categories of goods movement for which no reasonable basis
for an estimate currently exists, including government shipments, service
sector, retail sector, construction sector, transportation service providers,
household goods movers, and municipal solid waste providers.

Current dollar amounts were converted to chained 2000 dollars by BTS to
eliminate the effects of inflation over time.

SOURCES:Commodity
Flow Survey data-U.S. Department of
Transportation, Bureau of Transportation Statistics (BTS) and U.S. Department
of Commerce, U.S. Census Bureau, Commodity
Flow Survey (Washington, DC: 2003). Supplemental
estimates-MacroSys Research and Technology
calculations for BTS based on data compiled from a variety of sources.